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Subject: delivery performance
From: Szymon Grabowski (szymonprofitstudio.com)
Date: Thu May 25 2000 - 18:32:08 CDT

Hi,

While I was finally able to figure out my 'weird e-mail problem'
(thanks Wietse!), I have another issue.

I have thousands of e-mails in incoming and defer/deferred
directories and, because of this, both outbound and inbound
e-mail activity are much slower than ever before.

I've set up my main.cf to allow hundreds of concurrent
smtp connections, but it simply doesn't work.

The # of smtp processes is VERY, VERY low (as well as
the system load) and I can't seem to find a way to increase it,
while the queue grows, grows & grows...

If only I could get i.e. 100 smtp transports to run at the
same time, I'm sure the queue would be gone in no time.
smtp_destination_concurrency_limit and default_process_limit
don't seem to work for me :-(

Please take a look at my config files below. Perhaps I'm
missing something obvious here?

Sincerely,

Simon Grabowski
GetResponse.com

***

master.cf:

smtp inet n - n - - smtpd
pickup fifo n n n 60 1 pickup
cleanup unix - - n - 0 cleanup
qmgr fifo n - n 300 1 qmgr
rewrite unix - - n - - trivial-rewrite
bounce unix - - n - 0 bounce
defer unix - - n - 0 bounce
smtp unix - - n - - smtp
showq unix n - n - - showq
error unix - - n - - error
local unix - n n - - local

main.cf:

queue_directory = /web/spool/postfix
command_directory = /usr/sbin
daemon_directory = /usr/libexec/postfix
mail_owner = postfix
default_privs = nobody
myhostname = phl7.note.com
myorigin = $myhostname
inet_interfaces = all
biff=no

mydestination = /etc/postfix/mydestination
local_recipient_maps = $alias_maps unix:passwd.byname

alias_maps = hash:/etc/postfix/aliases
alias_database = hash:/etc/postfix/aliases
mail_spool_directory = /var/spool/mail

relay_domains = $mydestination
mynetworks = 207.8.131/24

smtp_connect_timeout = 5
smtp_data_done_timeout = 80
smtp_data_init_timeout = 30
smtp_data_xfer_timeout = 150
smtp_helo_timeout = 10
smtp_mail_timeout = 50
smtp_quit_timeout = 80
smtp_rcpt_timeout = 50

smtp_skip_quit_response=yes
smtp_skip_4xx_greeting=yes

qmgr_message_active_limit=10000
qmgr_message_recipient_limit=5000

default_destination_concurrency_limit=10
initial_destination_concurrency=2

smtp_destination_concurrency_limit=30
smtp_destination_recipient_limit=1000
local_destination_concurrency_limit=10
local_destination_recipient_limit=5000

qmgr_fudge_factor=80
qmgr_site_hog_factor=80

queue_run_delay = 61
#max_idle = 100
#max_use = 300

hash_queue_depth = 2
hash_queue_names = defer,deferred,active,incoming
default_process_limit=200
#deliver_lock_attempts=3
#deliver_lock_delay=1
default_transport = smtp

#smtp_connect_timeout = 20 # SG
#local_destination_concurrency_limit = 100 # SG
#default_destination_concurrency_limit = 100 # SG
#qmgr_message_active_limit = 5000 # SG
#qmgr_message_recipient_limit = 50000 # SG
#qmgr_fudge_factor = 75 # SG

#debug_peer_level = 10
# debug_peer_list = 127.0.0.1
# debug_peer_list = some.domain

virtual_maps = hash:/etc/postfix/virtual

disable_vrfy_command = yes

smtpd_banner = $myhostname ESMTP $mail_name

smtpd_etrn_restrictions = permit

smtpd_recipient_limit = 1000

smtpd_timeout = 150

# tarpit
smtpd_error_sleep_time = 2
smtpd_soft_error_limit = 10
smtpd_hard_error_limit = 100

smtpd_client_restrictions = permit
smtpd_helo_required = no
smtpd_helo_restrictions = permit

smtpd_sender_restrictions = reject_unknown_sender_domain, permit

smtpd_recipient_restrictions = permit_auth_destination, check_relay_domains

allow_untrusted_routing = no

access_map_reject_code = 550
invalid_hostname_reject_code = 501
maps_rbl_reject_code = 550
reject_code = 550
relay_domains_reject_code = 550
unknown_address_reject_code = 450
unknown_client_reject_code = 450
unknown_hostname_reject_code = 450

transport_maps = hash:/etc/postfix/transport